Electro Hardware THS3025M01F21 Brass Thumb Screw 8-32

Product Description

The ELECTRO HARDWARE THS3025M01F21 is a brass thumb screw with an 8-32 UNC thread and a knurled head, designed for tool-free fastening in light-duty assemblies, enclosures, and panel covers. The knurled head provides finger grip for quick installation and removal without a screwdriver. Made from brass with a zinc finish, this fastener resists corrosion in typical indoor environments. The overall length is 11/16 inches, with a thread length of 1/2 inch. Head diameter is 3/8 inches and head height is 3/16 inches. This is a shoulder-free design, meaning the thread runs consistent with no unthreaded shoulder section below the head.

This thumb screw is suited for use in electrical enclosures, instrument panels, HVAC equipment covers, control box assemblies, and similar light-duty applications where frequent access is required. The 8-32 UNC thread is a common size in electrical and electronic equipment, making this fastener a standard replacement or stock item for maintenance and service shops. It is sold individually and is appropriate for both trade and general assembly use.

Key Features

• Knurled head allows tool-free hand tightening and removal
• 8-32 UNC thread is widely compatible with standard electrical and panel hardware
• Brass construction with zinc finish for corrosion resistance in indoor applications
• No-shoulder design provides consistent threading from head to tip
• 1/2 inch thread length suits standard panel and cover thickness applications
• Meets multiple material and finish standards including ASTM B633

Compatibility

Designed as a standard 8-32 UNC thumb screw for use in electrical enclosures, HVAC equipment panels, instrument housings, and similar assemblies that require tool-free fastener access.

Installation Notes

This fastener is installed by hand and requires no tools under normal torque conditions. Before replacing thumb screws on live electrical enclosures or control panels, de-energize the equipment per applicable NEC guidelines. Inspect mating threads for damage before installation to avoid cross-threading the brass fastener, as brass is softer than steel and can strip under excessive force.